Yes. In fact that question is what lead to the invention of the movie camera. The original invention was not created by Edison but a man named Eadweard Muybridge.
http://en.wikipedia.org/wiki/Eadweard_Muybridge#Stanford_and_the_trotting_question
but yep. They do in fact leave the ground. In fact most sprinters (human sprinters!) do leave the ground.
No, a horse never takes more than 2 legs off the ground at once. For each level of speed-walk trot canter gallop-they lift different legs at different times.
While lying on your back, lift your legs up, and curl them up towards your chest. Your arms should be spread slightly, palms face down on the ground. Rock your body backwards until only your shoulders are touching the ground, then spring using your arms and the inertia from your legs going forward to jump up. This takes some practice.
It is training... Unless you happen to be stronger than the horse...
A turtle walks using its four legs. It will use the same pattern as most mammals where it lift one front leg and one rear leg of the opposite side.
An ant can typically lift and carry four times its own weight.
No, many cats, dogs, even sheep or goats lift all their legs when running at some point during mid-stride.
That's how God made them. *edit* Well, yes, but they need four legs to keep them balanced. *edit2* yea Liz is right :) they need 4 legs to keep balanced and they are mammals and most mammals have 4 legs.
i dont know the official word for it but i call it the "superman", its when you lie on your stomach and then lift your legs and arms off the ground
No, a horse never takes more than 2 legs off the ground at once. For each level of speed-walk trot canter gallop-they lift different legs at different times.
yes. a hurricane can lift a houso out of the ground.
You may need a low sill if it is difficult to lift your legs. In our tests most people preferred a sill that was no more than 200-250mm from the ground.
Horses usually knock the pole down over a jump because they are being lazy or didn't get a good start off the ground. Make sure your horse has enough speed, so that when they jump, they'll lift their front legs higher. You can also practice jumping "X" jumps. It will help teach your horse to pick their legs up.
No, it's not bad to lift legs up during menstruation. On your period you can do anything that you would normally do.
No, actually elephants are the only mammal that can't jump if I'm not mistaken.
yes
Look up sciatica.
Turn the table over and study its hidden features. You should find (at least) four legs and four bracing mechanisms -- one on each leg. While turned over, lift a leg and engage its brace. Test it to verify that the leg is secure. Repeat for all the legs.